The present invention is a composite porous hollow fiber membrane comprising at least a first and a second layer containing a fluororesin polymer, wherein the first layer has a columnar structure oriented in the longitudinal direction of the composite porous hollow fiber membrane, The average value ν of the Raman orientation parameter in the columnar structure calculated based on the formula is 1.5 or more and 4.0 or less, the second layer has a three-dimensional network structure, and the average pore diameter of the surface of the second layer is 5.0 nm or more It relates to a composite porous hollow fiber membrane of 5.0 μm or less.
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